This week Cadillac made the surprise news it’s returning to top-level prototype sports car racing. The American luxury brand will enter the 2017 WeatherTech SportsCar Championship, competing in the new Daytona Prototype International (DPi) class with one of the most handsome prototype sports cars we’ve ever seen.

Another handsome car is the Mazzanti Evantra, which this week received a new performance package. The performance package adds aerodynamic elements from the more extreme Evantra Millecavalli and also sees output upped to 771 horsepower.

Ferrari [NYSE:RACE] has built a 500th example of its LaFerrari flagship (one more than originally planned) and will auction it off on Saturday to help raise funds for reconstruction efforts in Central Italy, which was rocked by a devastating earthquake on August 24. The auction will take place during the Finali Mondiali at Daytona International Speedway.

This week we saw America’s Nikola unveil an extended-range electric semi-trailer truck where the range-extender is a hydrogen fuel cell. The company plans to supply hydrogen via its own network of fueling stations, with the fuel to be generated by electrolysis of water using electricity generated from solar farms.

Prototypes for a new Toyota sports car expected to revive the Supra name were spotted this week. The latest prototypes have shed much of the camouflage gear used on previous testers, revealing more of the car’s true shape.

There was also some major news from electric car startup Lucid this week. The Chinese-backed company revealed a prototype for its first model, a high-performance luxury sedan to take on the Tesla [NSDQ:TSLA] Model S. Along with the prototype reveal, Lucid confirmed the location for its new factory.

Ferrari is celebrating its 70th anniversary in 2017 and to mark the occasion will build an example of each of its models in one of 70 different liveries inspired by the company's history. Shown here is a 488 GTB in a livery inspired by Michael Schumacher’s 2003 Formula One car.

Five years after first announcing plans for a supercar, Polish startup Arrinera is finally about to start production of customer cars. The first examples will all be race cars, designed for GT3 competition. British racing driver Anthony Reid is the first to announce plans to hop behind the wheel.